// 配置邮件发送服务器
    'MAIL_SMTP'                     =>TRUE,
    'MAIL_HOST'                     =>'smtp.163.com',//邮件发送SMTP服务器
    'MAIL_SMTPAUTH'                 =>TRUE,
    'MAIL_USERNAME'                 =>'he***ker@163.com',//SMTP服务器登陆用户名
    'MAIL_PASSWORD'                 =>'xdoo****nhszz',//SMTP服务器登陆密码
    'MAIL_SECURE'                   =>'tls',
    'MAIL_CHARSET'                  =>'utf-8',
    'MAIL_ISHTML'                   =>TRUE,